土工基础

›› 2017, Vol. 31 ›› Issue (6): 766-770.

• 工程实录 • 上一篇    下一篇

基岩破碎带帷幕灌浆试验研究

孙晓东   

  1. （北京高能时代环境技术股份有限公司,北京 100095）
  • 收稿日期:2017-01-04 修回日期:2017-01-09 出版日期:2017-12-20 发布日期:2017-12-27
  • 作者简介:孙晓东（1982-），男，硕士，工程师，研究方向为环境岩土、固废处理及环境修复等。
  • 基金资助:

    十三五”国家重点研发计划项目“土工建筑增强材料制备与应用” (2016YFB0303200): 课题5-“土工材料在交通、矿山、垃圾填埋领域的应用示范研究(2016YFB0303205)

Curtain Grouting Tests of Fracture Rock Mass

SUN Xiaodong   

  1. (Beijing GeoEnviron Engineering & Technology Inc., Beijing 100095)
  • Received:2017-01-04 Revised:2017-01-09 Online:2017-12-20 Published:2017-12-27

摘要： 为验证帷幕灌浆提高基岩破碎带防渗性能的可能性，进行了帷幕灌浆试验。试验采用金刚石钻头、回转钻进、孔口封闭、自上而下分段、孔内循环灌浆法。灌浆试验成果、岩芯采取、压水试验等情况分析，灌浆效果可行，基岩破碎带防渗性能有了一定的提高，达到了试验目的。试验结果表明，帷幕灌浆排距不宜大于1.7R(R为浆液扩散半径)，孔距宜控制在1.5R；根据不同的工程地质和水文地质条件，进行帷幕灌浆试验，择优选择灌浆材料、灌浆工艺及扩散半径等施工参数。

关键词: 基岩破碎带, 帷幕灌浆, 灌浆试验, 压水试验, 透水率

Abstract: In order to verify the feasibility of the curtain grouting to improve the performance of the seepage control in the fracture rock zone, the field grouting tests were performed. The grouting test used diamond bit, rotary drilling, the inner circulation, topdown segmentation and grouting method. The rock core sampling and water pressurizing tests indicate that the grouting method was appropriate and the seepage of the fractured rock zone was able to reduce. The test results indicate that the row spacing of the curtain grouting should be smaller than 1.7R, where R is the radius of the grouting slurry penetrating distance, and the borehole spacing should be les 1.5R. different grouting tests were performed for the selection of grouting materials, sequence and grouting slurry penetrating radius.

Key words: Fractured Rock Zone, Curtain Grouting, Grouting Tests, Water Pressurize Testing, Seepage Rate